Hostname

harz04.de

Last fetched Tue, 28 Jul 2026 09:21:43 GMT

harz04.de resolves to 1 IPv4 address operated by AS38927 in DE.

Nutrition Label

Resolution chain

harz04.de resolves to 1 distinct IPv4 address via WhisperGraph DNS data. Each row links to the IP, prefix, and announcing ASN.

IP	Prefix	ASN	Operator	Country
87.237.121.137	87.237.120.0/21	AS38927	—	DE

WHOIS identity

No WHOIS records are currently associated with harz04.de in WhisperGraph.

Subdomains

2 observed subdomains of harz04.de.

Subdomain
mail.harz04.de
www.harz04.de

Web-graph footprint

Distinct hostnames that link to or from harz04.de in the public web crawl.

36 sites linked to from this hostname.

Sample inbound links

Sample outbound links

Threat posture

History

Mail and authentication

MX records

mail.harz04.de

SPF policy

2 SPF mechanisms authorising senders for harz04.de.

Mechanism	Target
SPF_A	harz04.de
SPF_MX	harz04.de

Pivot deeper into the graph from harz04.de.

Cypher and MCP

Reproduce the resolution chain directly against graph.whisper.security:

MATCH (h:HOSTNAME {name: "harz04.de"})-[:RESOLVES_TO]->(ip:IPV4)
      -[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
      -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
RETURN ip.name AS ip, ap.name AS prefix, asn.name AS asn, n.name AS operator
LIMIT 20

Or query Whisper from your own LLM workflow via the Whisper MCP server.